1. Dwyer,J., Chem. Ind., 1984, 258.
2. “Zeolites as Catalysts, Sorbents and Detergent Builders”, Karge, H.G. and Weitkamp, J. (eds.). Studies in Surface Science and Catalysis 46. Elsevier, 1989.
3. Townsend, R.P., in “New Developments in Zeolite Science and Technology”, Murakami, Y., Iijima, H. and Ward, J.W. (Eds.), Studies in Surface Science and Catalysis 28. Elsevier, 1986, 273.
4. Chu, S.Y. and Sposito, G.. Soil Sei. Soc. Am. J.. 45. 1981, 1084.
5. Flanigen, E.M., Patton, R.L. and Wilson, S.T. in “Innovation in Zeolite Material Science”, Grobet, P.J., Mortier, W.J., Vansant, E.F. and Schulz-Ekloff, G., (Eds.), Studies in Surface Science and Catalysis 37. Elsevier. 1988, 13.